<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>箭头函数</title>
</head>
<body>
    <script>
        let foo1 = ()=>console.log(this);

       function foo2(){
           let name =123;
           let foo1=()=>console.log(name);
           foo1();
       }

       let usr ={
           name: 'aaaaa' ,
           foo:()=>console.log(usr.name)
       }



    //    foo1();
       foo2();
       usr.foo()
    </script>
</body>
</html>